Highly recommend recall friend for a Robots mastermind, as the large size of the assault bot can cause it or other bots to become stuck after going up lifts etc.
Other mm's should be able to get away without it.
Teleport works fine without stamina provding you are running no other toggles and can get an endrx or 2 into it. With only 1 endrx and no stam, don't tp very far!
Otherwise it's pretty workable.
Good idea about the recall friend!
I actually wanted to take both recall friend and teleport foe. 
I got tp when I respeced as I was finding my bots were having problems with some maps so recall friend was needed. Also fancied trying out tp and currently with 3 +3 SO Endreds I can tp the length of nerva (from thorn isle to the hosp) while in PFF and with sprint up with out a problem. Only end problem I have is when running all my toggles. I dont have stamina so if you can spare 3 slots for a travel power get it if not maybe something else. I am also considering fly for PVP as well but that means no tp foe due to lack of power slots.
I wanted to give my new MM the ability to teleport, as it seems fast and "fits", in his case. However, I know Teleport is an edurance hog, and I'm not going to pick stamina. So I'll need to slot teleport, I know.
The question is, won't it be a pain to use in such a case?